Features
Tuning Up for the Cup Races
"Shamrock IV" -- The Unknown Quantity Among Four 75-Foot Racing Yachts
The Romance of Invention--XIV
Cottrell-- Catalyser
What Industry Can do for Americanization
And Some of the Things Which the Industries May Expect from Americanization in Return
Wonders in Steel Forging
The Role of Giant Hydraulic Presses and Huge Steam Hammers in Large-Scale Blacksmithing
Baltimore's Tilting Dam
A Structure That Opens Automatically When It Has Backed Up Too Much Water
How Plate Glass is Made
The Tedious Process by Which Modern Technology Has Been Able to Make Glass without Blowing
Orchard Medicine Quacks, Moisture Absorption Through Varnish
The Naturalist's Corner
Botanical Notes from All Quarters of the Globe
Departments
- Departments
Correspondence - - July 3, 1920
Inventions New and Interesting - July 3, 1920
Recently Patented Inventions - July 3, 1920
Notes and Queries - July 3, 1920
